Fig. 55. Gyrocotyle fimbriata. Transverse section, showing cutieula 

 and euticulai musculature. Iron haematoxylin. X 1500. 



Fig. 56. Showing structure of muscle fibres of the inner circular and 

 inner longitudinal layers. X 1850. 



Fig. 57. Showing sagittal (upper) and outer trausverse (lower) 

 muscle cells. X 1850. 



Fig. 58. Frontal section of cutieula and euticulai musculature. Cut 

 through a fold of body-covering, in the plane of the fibres of the euticu- 

 lai- musculature. X 1850. 



Fig. 59. Showing wall of receptaculum seminis, and undifferentiated 

 nucleated muscle fibres lying in the parenchyma of which it is composed. 

 X 1850. 



cut. — cutieula. 



cut. long. — cuticular longitudinal muscle. 



cut. trans. — cuticular transverse muscle. 



ext. cut. I. — external cuticular layer. 



in. long. fib. — inner longitudinal fibre. 



in. trans. — inner transverse muscle. 



in. trans, fib. — inner transverse fibre. 



nuc. — nucleus. 



out. long. — outer longitudinal muscle. 



out. trans. — outer transverse muscle. 



out. trans, fib. — outer transverse fibre. 



par. felt — parenchyma felt. 



par. nu. — parenchyma nucleus. 



sag. fib. — sagittal fibre. 



sub) cut. — subcuticula. 



iimlif. muse. fib. — undifferentiated muscle fibre. 



vit. — vitellaria. 



[456] 



